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51716 = 2271847

51716 has 12 divisors (see below), whose sum is σ = 103488. Its totient is φ = 22152.

The previous prime is 51713. The next prime is 51719. The reversal of 51716 is 61715.

It is an interprime number because it is at equal distance from previous prime (51713) and next prime (51719).

51716 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 896 + ... + 951.

It is an arithmetic number, because the mean of its divisors is an integer number (8624).

251716 is an apocalyptic number.

It is an amenable number.

51716 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51744).

51716 is a wasteful number, since it uses less digits than its factorization.

51716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1858 (or 1856 counting only the distinct ones).

The product of its digits is 210, while the sum is 20.

The square root of 51716 is about 227.4115212561. The cubic root of 51716 is about 37.2570366419.

Subtracting 51716 from its reverse (61715), we obtain a palindrome (9999).

It can be divided in two parts, 51 and 716, that added together give a palindrome (767).

The spelling of 51716 in words is "fifty-one thousand, seven hundred sixteen".

Divisors: 1 2 4 7 14 28 1847 3694 7388 12929 25858 51716